#!/bin/bash
name="Ma Gnus"

if [ `whoami` != "larsi" ]; then
    echo "This script is for larsi only"
    exit
fi

# First do a release commit on the current version.

version=`grep "defconst gnus-version-number" lisp/gnus.el | \
    sed 's/[^.0-9]//g'`

initial=`echo "$name" | sed 's/^\([A-Z]\).*/\1/g' | tr A-Z a-z`

prefix=`echo $version | sed 's/^\(.*[.]\)\([0-9][0-9]*\)/\1/'`
next_version=`echo $version | sed 's/^\(.*[.]\)\([0-9][0-9]*\)/\2/'`
next_version=`expr $next_version + 1`
next_version="$prefix$next_version"

date=`TZ=Z date "+%Y-%m-%d"`
echo -e "$date  Lars Magne Ingebrigtsen  <lars@ingebrigtsen.no>\n\n\t* gnus.el: $name v$next_version is released.\n"\
  > /tmp/changelog
cat lisp/ChangeLog >> /tmp/changelog
mv /tmp/changelog lisp/ChangeLog

# Then update the sources to the next version.

sed "s/$name v[.0-9]*/$name v$next_version/" texi/gnus.texi > g.texi.tmp
mv g.texi.tmp texi/gnus.texi
sed "s/$name v[.0-9]*/$name v$next_version/" texi/message.texi > m.texi.tmp
mv m.texi.tmp texi/message.texi
sed "s/defconst gnus-version-number \"$version\"/defconst gnus-version-number \"$next_version\"/" lisp/gnus.el > g.el.tmp
mv g.el.tmp lisp/gnus.el

git commit -a -m "$name v$next_version is released"

tversion=`echo $next_version | sed 's/[.]/-/g'`

git tag -a "$initial$tversion" -m "$name v$next_version is released"

git push && git push origin tag "$initial$tversion"

# Increase the number, yet again, to start the next development cycle.

version=$next_version

prefix=`echo $version | sed 's/^\(.*[.]\)\([0-9][0-9]*\)/\1/'`
next_version=`echo $version | sed 's/^\(.*[.]\)\([0-9][0-9]*\)/\2/'`
next_version=`expr $next_version + 1`
next_version="$prefix$next_version"

sed "s/$name v[.0-9]*/$name v$next_version/" texi/gnus.texi > g.texi.tmp
mv g.texi.tmp texi/gnus.texi
sed "s/$name v[.0-9]*/$name v$next_version/" texi/message.texi > m.texi.tmp
mv m.texi.tmp texi/message.texi
sed "s/defconst gnus-version-number \"$version\"/defconst gnus-version-number \"$next_version\"/" lisp/gnus.el > g.el.tmp
mv g.el.tmp lisp/gnus.el

git commit -a -m "$name v$next_version is begun"
git push